Melatonin ndi timadzi tambiri timene timapangidwa ndi mammalian ndi pineal gland, yomwe ili ndi ntchito zosiyanasiyana zamoyo, kuphatikiza kukonza kugona, kuletsa kukalamba, komanso kuteteza mitsempha yamagazi. kuwongolera kugona, kuchepetsa kuchuluka kwa kudzutsidwa kwausiku, komanso kukulitsa nthawi yogona kwambiri.Kuphatikiza apo, melatonin ndi antioxidant wamphamvu kwambiri, yomwe imatha kuchotsa ma free radicals m'thupi, kuchedwetsa ukalamba, komanso kukhala ndi zotsatira za kukongola ndi kukongola.Melatonin imatetezanso mitsempha yamagazi.